| Presentation | 2021-06-24 A Data Hiding Method Using Correlation Coefficients among Index Colors for Palette-Based Images Eichi Arai, Shoko Imaizumi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we propose an extended data hiding method for palette-based images, which improves the marked image quality.Before the data hiding process, the index colors are typically reordered in order to minimize the differences among neighboring colors.First, the previous method reorders the index colors using the nearest neighbor method.Therefore, as the number of the index colors, which have not been reordered, decreases, the differences among the remaining index colors increases.In contrast, the proposed method first calculates correlation coefficients among index color for each two of RGB color components.A single or multiple sets, which consist of the index colors, are formed based on the coefficients, and the origin is derived for each set.Then, the index colors in each set are numbered in ascending order of distance from the origin, and all the sets are finally combined.Consequently, the marked image quality of our method is higher than that of the previous method.Experimental results show the effectiveness of the proposed method in terms of image quality evaluation using PSNR and SSIM. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | palette-based image / data hiding / index color / correlation coefficient / image quality improvement |
| Paper # | SIS2021-2 |
| Date of Issue | 2021-06-17 (SIS) |
| Conference Information | |
| Committee | SIS / IPSJ-AVM |
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| Conference Date | 2021/6/24(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Intelligent Multimedia Systems, Applied Embedded Systems, Three-Dimensional Image Technology (3DIT), etc. |
| Chair | Noriaki Suetake(Yamaguchi Univ.) / Hiroyuki Kasai(Waseda Univ.) |
| Vice Chair | Tomoaki Kimura(Kanagawa Inst. of Tech.) / Naoto Sasaoka(Tottori Univ.) |
| Secretary | Tomoaki Kimura(National Inst. of Tech., Ube College) / Naoto Sasaoka(NTT) / (NTT) |
| Assistant | Soh Yoshida(Kansai Univ.) / Yoshiaki Makabe(Kanagawa Inst. of Tech.) |
| Paper Information | |
| Registration To | Technical Committee on Smart Info-Media Systems / Special Interest Group on Audio Visual and Multimedia Information Processing |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Data Hiding Method Using Correlation Coefficients among Index Colors for Palette-Based Images |
| Sub Title (in English) | |
| Keyword(1) | palette-based image |
| Keyword(2) | data hiding |
| Keyword(3) | index color |
| Keyword(4) | correlation coefficient |
| Keyword(5) | image quality improvement |
| 1st Author's Name | Eichi Arai |
| 1st Author's Affiliation | Chiba University(Chiba Univ.) |
| 2nd Author's Name | Shoko Imaizumi |
| 2nd Author's Affiliation | Chiba University(Chiba Univ.) |
| Date | 2021-06-24 |
| Paper # | SIS2021-2 |
| Volume (vol) | vol.121 |
| Number (no) | SIS-73 |
| Page | pp.pp.7-12(SIS), |
| #Pages | 6 |
| Date of Issue | 2021-06-17 (SIS) |